All of the Oculus web site, code, mail, and personal certificates have been signed by the Oculus Certificate Authority. The certificate for this authority is available here. You can load it directly into your web browser by selecting the certificate, or you can view it by selecting the text file.

Oculus Technologies Corporation Certificate Authority
  certificate
  text file

When you load the Oculus Certificate Authority Certificate into your web browser, you indicate that you trust any subsequent sites, code, email, or personal certificates that have been signed by that certificate authority.